Gonna second (more like fifty) Mullvad, iVPN, and Proton. One thing I wish would become more commonplace, though, is integrated support for privacy-oriented DNS within VPN apps. It makes your fingerprint stick out so much if you use say Quad9 or ControlD DNS with Mullvad/Proton/iVPN, but this wouldn't be the case if these were offered by default in the VPN's settings. I don't prefer using the VPN's own DNS. Of course this doesn't matter to most VPN users, otherwise they'd just be using Tor or residential proxies.